Collonville

static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list

    var cnt = foo.Select(x => x * 2).Where(x => x <= 14).Count();

    Console.WriteLine(cnt); // show count
}

Collonville

class Program
{
    static void Main(string[] args)
    {
        List<Player> foo = new List<Player>
        {
            new Player(100, "Miku"),
            new Player(350, "Ren"),
            new Player(700, "Yukarin"),
            new Player(3500, "IA")

Collonville

 static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list

    Console.WriteLine(foo.Count()); // show size
}

Collonville

static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list

    var boo = foo.Where(x => x % 2 == 0 && x < 5); //get even num and is under 5

    boo.ToList().ForEach(x => Console.WriteLine(x)); //show
}

Collonville

static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list

    var boo = foo.Where(x => x % 2 == 0); //get even num

    boo.ToList().ForEach(x => Console.WriteLine(x)); //show
}

Collonville

static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list

    var boo = foo.Select(x => x * x); //power

    boo.ToList().ForEach(x => Console.WriteLine(x)); //show
}

Collonville

static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list

    var boo = foo.Where(x => x >= 5); //LINQ

    boo.ToList().ForEach(x => Console.WriteLine(x)); //show
}

Collonville

static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list

    var boo = foo.Where(x => x >= 5); //LINQ

    foreach (var data in boo)
    {
        System.Console.WriteLine(data);
    }

Collonville

static void Main(string[] args)
{
    List<int> foo = new List<int> { 6, 1, 4, 9, 2 }; //list
    List<int> boo = new List<int>(); //new list

    foreach (var data in foo)
    {
        if (data >= 5)
        {
            boo.Add(data);

Collonville

SELECT name FROM meal WHERE price < 1000